Heating attachment for fireplaces



June 22 1926. 1,589,539

L. MARCHESSAULT HEATING ATTACHMENT FOR EIREPLACES Filed Jan. 14; 1924.

:M m iwe 0 w 4 a i z y 4 6 A Z z Patented June 22, 1926.

UNITED STATES LOUIS MARGI-IESSAULT, OF MINNEAPOLIS, MINNESOTA.

HEATING ATTACHMENT FOR FIREPLACES.

Application filed January 14, 1924.

rable accessory designed to be built into a fireplace during or after construction thereof and adapted to conserve and deliver heat into the room that would otherwlse escape up the fireplace chimney.

Another object is to supply a device of the present nature designed to present an ap pealing appearance in that portlon thereof visible within a room and designed to per- Init of ready inspection and cleaning when that is required.

A further object is to provide a heating device of the instant kind having means for controlling the output of heated air there from. i

More specifically it is my object to provide a heating device designed to be applled to the conventional fireplace structure and comprising a plurality of air heating elements adapted to establish a movement of air from without to the interior of a room and to heat said air in its passage into the room.

With the foregoing and other objects in View, which will appear in the following description, the invention resides in the novel combination and arrangement of parts and in the details of construction hereinafter described and claimed.

In the drawings, a heater embodying my invention is illustrated in Fig. 1, the same being shown as applied to a fireplace of conventional design; Fig. 2 is a vertical, central, sectional view of the same, the grating or grille being removed for the sake of clearness and Fig. 3 is a detail View illustrating, particularly, the lower end of one of the heater flues and the flue reducing thimble therein.

My improvement includes a back plate '10, a head plate 11 and flues 12, the latter being anchored at their ends in and opening through said plates and sloping upwardly from the back plate to the head plate. Both plates 10, 11 are segmental in form, the same being respectively supplied with arch-like flanges 10, 11. These flanged plates are mounted, as shown, on angle rests 13, 14 arranged in the outer and inner walls 15, 16 of a fireplace structure, those portions of such structure above said rests being built upon the arch-like flanges Serial 7 No. 686,003.

10, 11. To simplify the anchoring of the flues 12 in the plates 10, 11 a right angular relation is preferably maintained between said flues and plates. This practice results in the peculiar shapes in the arch-like flanges 10, 11 In this connection, it will be understood that the inner edge of the flange 11 lies flush or. substantially so with the face of the inner wall 16 and that the plate 11 is inclined with respect thereto to assume right angular relation with the upwardly and inwardly sloping flues 12. The back plate 10, of course, parallels the front plate 11. Communicating with the archway 17 in the outer wall 15 that accommodates the back plate 10 is an inlet duct 18 opening into the outer atmosphere. This duct 18 is supplied with a damper 19 for opening, closing and otherwise regulating the ingress of air therethrough. Sloping upwardly and inwardly, the flues 12 induce a movement of air from without to the Warmer interior of the room. Said flues, passing through the chimney 20 of the fireplace at an elevation immediately above the the chamber 21, are subjected to the rising hot air and burning gases and, being effectively warmed thereby, heat the air in said flues. Thus heated, the passage of air throughv the flues 12 is stimulated with the result that a substantial quantity of fresh warm air is supplied to the room.

In order to heat the ingoing air to an appreciable degree, I use flues of relatively large diameter and restrict the outer ends thereof with plugs or thimbles 22 (Fig. 3), each having a small axial bore 23 there through. v

The damper 19 is operated from within thev room by means of an actuating rod 24; reaching through one of the flues 12. The outer end of this rod hooks into a slotted arm 25 on the damper shaft 19*, thrusts or Having described my invention, what I claim as-new and desire to protect by Let ters =-Patent is:

The combination with a fireplace -structure having archways in the inner and outer walls thereof, of head and back plates each formed with an outwardly extending flange thereon and respectively designed to fit Within and support thearchways of said inner and outer Walls fines anchored at their ends in said plates and slo'plngupwardly and inwardly through the fireplace chimney, said flues communicating with the outer air through the back plate and-opening through the front plate, the inclination of said fines serving to induce an ingress of air into the room, said air being warmed in its passage through said flues by the heat in said chimney. 1

In testimony whereof, I have signed my 20 name to this specification.

LOUIS MARGHES'SA'ULT. 

